CN210033384U - Underground anti-blocking oil extraction device - Google Patents

Underground anti-blocking oil extraction device Download PDF

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Publication number
CN210033384U
CN210033384U CN201920588551.2U CN201920588551U CN210033384U CN 210033384 U CN210033384 U CN 210033384U CN 201920588551 U CN201920588551 U CN 201920588551U CN 210033384 U CN210033384 U CN 210033384U
Authority
CN
China
Prior art keywords
base
shell
mandrel
conical
spring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201920588551.2U
Other languages
Chinese (zh)
Inventor
李炜
杨超
杨浩
罗衡
袁征
李航
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cnooc Safety Technology Service Co Ltd Zhanjiang Branch
Original Assignee
Cnooc Safety Technology Service Co Ltd Zhanjiang Branch
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cnooc Safety Technology Service Co Ltd Zhanjiang Branch filed Critical Cnooc Safety Technology Service Co Ltd Zhanjiang Branch
Priority to CN201920588551.2U priority Critical patent/CN210033384U/en
Application granted granted Critical
Publication of CN210033384U publication Critical patent/CN210033384U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses an anti-sticking oil recovery device in pit mainly comprises crossover sub, ball joint, jump ring, dabber, swab, screw, sealing member, support ring, seal ring, cone valve core, spring, lower casing, base, a counter weight section of thick bamboo, counter weight block, its characterized in that: the spherical joint and the mandrel, the mandrel and the lower shell, the lower shell and the base, the lower shell and the counterweight cylinder, and the counterweight cylinder and the counterweight block are all connected through threads; the conversion joint is connected with the spherical joint through a ball hinge; the drawer is connected with the support ring through a screw; the sealing element is arranged in a cavity formed by the drawer and the support ring; the lower shell is provided with a hollow flow passage, and the upper end of the inner wall is provided with a conical boss; the conical valve core is placed in a cavity formed by the lower shell and the base, the conical surface at the upper end is matched with the conical boss at the upper end of the inner wall of the lower shell, and the lower end is abutted against the base; the spring is placed in a cavity formed by the conical valve core, the lower shell and the base, the upper end of the spring is propped against the bottom of the conical valve core, and the lower end of the spring is propped against the top of the base.

Description

Underground anti-blocking oil extraction device
Technical Field
The utility model relates to an oil recovery instrument, especially an anti-sticking oil recovery device in pit belongs to mechanical engineering or oil recovery engineering technical field.
Background
Currently, with the continuous increase of development time of oil fields, the economical efficiency of exploiting crude oil by adopting a conventional sucker-rod pump is greatly reduced due to insufficient stratum energy and the reduction of bottom pressure of an oil well developed to the middle and later stages, and the oil wells producing crude oil by adopting an oil fishing mode and the construction workload are increasing day by day. However, the conventional oil bailing swab has the following problems: when the diameter of the rubber cylinder is too small, the sealing is insufficient, and when the diameter of the rubber cylinder is too large, the downward movement is blocked; hysteresis exists in the seal after the wax is precipitated; use the pin as overload protection, can not realize quantitative salvage, and can cause impact load to the below structure after the overload fracture. Therefore, on the basis of the prior art, the quantitative fishing anti-blocking oil fishing device is designed to be particularly important for oil exploitation and preventing an oil fishing tool from falling into a well.
Disclosure of Invention
The utility model aims at: in order to overcome the difficulties, the underground anti-blocking oil extraction device is specially provided.
In order to achieve the above purpose, the utility model discloses a technical scheme is:
the utility model provides an anti-sticking oil production device in pit mainly comprises crossover sub, ball joint, jump ring, dabber, swab, screw, sealing member, support ring, seal ring, awl case, spring, lower casing, base, a counter weight section of thick bamboo, counter weight, its characterized in that: the spherical joint and the mandrel, the mandrel and the lower shell, the lower shell and the base, the lower shell and the counterweight cylinder, and the counterweight cylinder and the counterweight block are all connected through threads; the conversion joint is connected with the spherical joint through a ball hinge; the drawer is connected with the support ring through a screw; the outer wall of the conversion joint is provided with a groove for conveniently placing the spherical joint, and a spherical groove matched with the spherical joint is arranged in the conversion joint; the lower part of the spherical joint is provided with a groove matched with the clamp spring; the mandrel is provided with a hollow flow passage, the upper end of the mandrel is provided with a radial through hole, and the outer wall of the lower end of the mandrel is provided with a boss; the upper end and the lower end of the swab are provided with radial through holes; the sealing element is arranged in a cavity formed by the drawer and the support ring; the swab and the support ring are placed on the sealing gasket; the sealing washer is placed on a boss at the lower end of the outer wall of the mandrel; the lower shell is provided with a hollow flow passage, and the upper end of the inner wall of the lower shell is provided with a conical boss; the conical valve core is placed in a cavity formed by the lower shell and the base, the conical surface at the upper end is matched with the conical boss at the upper end of the inner wall of the lower shell, and the lower end is abutted against the base; the spring is placed in a cavity formed by the conical valve core, the lower shell and the base, the upper end of the spring props against the bottom of the conical valve core, and the lower end of the spring props against the top of the base; the base is provided with an axial through hole, and the lower end of the base is provided with a through groove for screwing in; the counterweight cylinder is provided with a hollow flow passage; the balancing weight is of a conical structure and is provided with a hollow flow passage.
Compared with the prior art, the utility model discloses the beneficial effect who has is: (1) the spring at the lower end of the underground anti-blocking oil extraction device is replaceable, and the position of the base is adjustable, so that the underground anti-blocking oil extraction device is suitable for different fishing quantities and is convenient to replace; (2) the diameter of the balancing weight is equivalent to that of a well head, so that the well wall can be cleaned in advance when oil is fished in a well, and the blocking of the oil fishing is prevented; (3) the sealing element is independently installed, so that the abrasion can be reduced, and the replacement is convenient.
Drawings
Fig. 1 is a schematic structural diagram of a downhole anti-sticking oil extraction device of the present invention;
FIG. 2 is a schematic structural diagram of an adapter in the downhole anti-sticking oil extraction device of the present invention;
FIG. 3 is a schematic structural view of the ball joint and the snap spring of the downhole anti-seize oil production device of the present invention;
FIG. 4 is a schematic cross-sectional view A-A of FIG. 1;
FIG. 5 is a schematic cross-sectional view B-B of FIG. 1;
FIG. 6 is a schematic cross-sectional view of C-C of FIG. 1;
FIG. 7 is another schematic view of the base;
in the figure: 1. the hydraulic coupler comprises a conversion joint, 2. a spherical joint, 3. a clamp spring, 4. a mandrel, 5. a puller, 6. a screw, 7. a sealing piece, 8. a support ring, 9. a sealing washer, 10. a conical valve core, 11. a spring, 12. a lower shell, 13. a base, 14. a counterweight rod and 15. a counterweight block.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1-7, an oil recovery device of preventing blocking in pit mainly comprises crossover sub 1, ball joint 2, jump ring 3, dabber 4, swab 5, screw 6, sealing member 7, support ring 8, seal ring 9, awl case 10, spring 11, lower casing 12, base 13, a counter weight section of thick bamboo 14, balancing weight 15, its characterized in that: the spherical joint 1 and the mandrel 4, the mandrel 4 and the lower shell 12, the lower shell 12 and the base 13, the lower shell 12 and the counterweight cylinder 14, and the counterweight cylinder 14 and the counterweight block 15 are all connected through threads; the conversion joint 1 is connected with the spherical joint 2 through a ball hinge; the drawer 5 is connected with the support ring 8 through a screw 6; the outer wall of the conversion joint 1 is provided with a groove for conveniently placing the spherical joint 2, and a spherical groove matched with the spherical joint 2 is arranged in the conversion joint; the lower part of the spherical joint 2 is provided with a groove matched with the clamp spring 3; the mandrel 4 is provided with a hollow flow passage, the upper end of the mandrel is provided with a radial through hole, and the outer wall of the lower end of the mandrel is provided with a boss; the upper end and the lower end of the swab 5 are provided with radial through holes; the sealing element 7 is arranged in a cavity formed by the drawer 5 and the support ring 8; the pump 5 and the support ring 8 are placed on the sealing washer 9; the sealing washer 9 is placed on a boss at the lower end of the outer wall of the mandrel 4; the lower shell 12 is provided with a hollow flow passage, and the upper end of the inner wall is provided with a conical boss; the conical valve core 10 is placed in a cavity formed by the lower shell 12 and the base 13, the conical surface at the upper end is matched with the conical boss at the upper end of the inner wall of the lower shell 12, and the lower end is abutted against the base 13; the spring 11 is placed in a cavity formed by the conical valve core 10, the lower shell 12 and the base 13, the upper end of the spring props against the bottom of the conical valve core 10, and the lower end of the spring props against the top of the base 13; the base 13 is provided with an axial through hole, and the lower end of the base is provided with a through groove for screwing in; the counterweight cylinder 14 is provided with a hollow flow passage; the weight block 15 has a conical structure and is provided with a hollow flow passage.
As shown in fig. 1, 4 and 5, the downhole anti-sticking oil extraction device is characterized in that the mandrel 4 and the swab 5 are provided with radial through holes for oil circulation;
as shown in fig. 1, 4 and 5, the downhole anti-sticking oil extraction device is characterized in that a gap is reserved between the swab 5 and the mandrel 4;
as shown in fig. 1, 2 and 3, the downhole anti-seize oil extraction device is characterized in that the bottom in the adapter 1 is provided with a groove matched with the ball joint 2.
As shown in fig. 1, 2 and 3, the downhole anti-seize oil extraction device is characterized in that the lower end of the ball joint 2 is provided with a groove matched with the clamp spring 3 to prevent the ball joint 2 from axially moving.
As shown in fig. 6 and 7, the downhole anti-sticking oil extraction device is characterized in that the base 13 is provided with an axial flow passage, and the bottom of the base is provided with a groove.
As shown in fig. 1-7, the downhole anti-sticking oil extraction device is characterized in that the working principle is as follows: when the device descends, the counterweight block 15 cleans the well wall wax deposition in advance, when the device contacts the oil surface, under the action of buoyancy and friction force, the oil bailing main body consisting of the swab 5, the sealing element 7 and the support ring 8 ascends, and oil enters the upper part of the swab through the annular gap between the swab 5 and the mandrel 4. Part of petroleum enters a sealing cavity formed by the pump 5, the sealing piece 7 and the support ring 8 through radial through holes of the mandrel 4 and the pump 5, and part of petroleum enters hollow flow channels of the mandrel 4 and the lower shell 12 and acts on the cone valve core 10; when the device moves upwards, under the action of gravity, friction force and liquid column pressure, an oil fishing main body consisting of a pump 5, a sealing element 7 and a support ring 8 moves downwards and is pressed on a sealing gasket 9 of a boss on the outer wall of the mandrel 4, and meanwhile, the sealing element 7 expands outwards under the action of the liquid column pressure to form sealing with a well wall and prevent oil leakage; when the liquid column pressure is greater than the starting pressure of the spring 11, the conical valve core 10 descends, the device starts oil discharge until the conical valve core 10 ascends to close the channel, and the pressure relief and oil fishing process is not interfered; when the liquid column pressure is smaller than the starting pressure of the spring 11, the conical valve core 10 is not opened, and the device can be directly lifted to carry out oil fishing operation.
The above-described embodiments are intended to be illustrative of the present patent and not to limit the scope of the patent, and any equivalent changes and modifications that may be made by one skilled in the art without departing from the spirit and principles of the patent are intended to be covered by the present patent system.

Claims (1)

1. The utility model provides an anti-sticking oil recovery device in pit mainly comprises adapter (1), ball joint (2), jump ring (3), dabber (4), swab (5), screw (6), sealing member (7), support ring (8), seal ring (9), awl case (10), spring (11), lower casing (12), base (13), a counter weight section of thick bamboo (14), balancing weight (15), its characterized in that: the spherical joint (2) is connected with the mandrel (4), the mandrel (4) is connected with the lower shell (12), the lower shell (12) is connected with the base (13), the lower shell (12) is connected with the counterweight cylinder (14), and the counterweight cylinder (14) is connected with the counterweight block (15) through threads; the conversion joint (1) is connected with the spherical joint (2) through a ball hinge; the drawer (5) is connected with the support ring (8) through a screw (6); the outer wall of the conversion joint (1) is provided with a groove for placing the spherical joint (2) conveniently, and a spherical groove matched with the spherical joint (2) is arranged in the conversion joint; the lower part of the spherical joint (2) is provided with a groove matched with the clamp spring (3); the mandrel (4) is provided with a hollow flow passage, the upper end of the mandrel is provided with a radial through hole, and the outer wall of the lower end of the mandrel is provided with a boss; the upper end and the lower end of the swab (5) are provided with radial through holes; the sealing element (7) is placed in a cavity formed by the drawer (5) and the support ring (8); the pump (5) and the support ring (8) are placed on the sealing washer (9); the sealing washer (9) is placed on a boss at the lower end of the outer wall of the mandrel (4); the lower shell (12) is provided with a hollow flow passage, and the upper end of the inner wall is provided with a conical boss; the conical valve core (10) is placed in a cavity formed by the lower shell (12) and the base (13), the conical surface at the upper end is matched with the conical boss at the upper end of the inner wall of the lower shell (12), and the lower end is abutted against the base (13); the spring (11) is placed in a cavity formed by the conical valve core (10), the lower shell (12) and the base (13), the upper end of the spring props against the bottom of the conical valve core (10), and the lower end of the spring props against the top of the base (13); the base (13) is provided with an axial through hole, and the lower end of the base is provided with a through groove for screwing in; the counterweight cylinder (14) is provided with a hollow flow passage; the balancing weight (15) is of a conical structure and is provided with a hollow flow passage.
CN201920588551.2U 2019-04-27 2019-04-27 Underground anti-blocking oil extraction device Expired - Fee Related CN210033384U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920588551.2U CN210033384U (en) 2019-04-27 2019-04-27 Underground anti-blocking oil extraction device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920588551.2U CN210033384U (en) 2019-04-27 2019-04-27 Underground anti-blocking oil extraction device

Publications (1)

Publication Number Publication Date
CN210033384U true CN210033384U (en) 2020-02-07

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ID=69362018

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201920588551.2U Expired - Fee Related CN210033384U (en) 2019-04-27 2019-04-27 Underground anti-blocking oil extraction device

Country Status (1)

Country Link
CN (1) CN210033384U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111827939A (en) * 2020-07-22 2020-10-27 中海油能源发展股份有限公司工程技术分公司 Perforation storage and protection integrated device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111827939A (en) * 2020-07-22 2020-10-27 中海油能源发展股份有限公司工程技术分公司 Perforation storage and protection integrated device

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GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20200207

Termination date: 20210427